Article: Q187297
Product(s): Microsoft Visual Basic for Windows
Version(s): WINDOWS:5.0
Operating System(s):
Keyword(s): kberrmsg kbDAOsearch kbDAO350 kbOracle kbVBp500 kbGrpDSVBDB
Last Modified: 11-JAN-2001
-------------------------------------------------------------------------------
The information in this article applies to:
- Microsoft Visual Basic Standard Edition for Windows, version 5.0
-------------------------------------------------------------------------------
SYMPTOMS
========
If you try to run Structured Query Language (SQL) against an Oracle database
through Data Access Objects (DAO), you can encounter the following error:
Run-Time Error 3024
Couldn't find file C:\Program Files\DevStudio\VB\<schema name>.mdb.
This error occurs when you try to specify a schema name in your SQL statement and
you use DAO with Oracle. The <schema name> in the error message is
whatever schema name you specified for the Oracle object you reference.
RESOLUTION
==========
If you add the dbSQLPassThrough option to the OpenRecordset method, the sample
code in the MORE INFORMATION section of this article runs without error. You can
use brackets ([ ]) around the table name in the SQL string to avoid the error as
well:
sql = "SELECT * FROM [scott.emp]"
Also, you can use an advanced data access technology, such as ActiveX Data
Objects (ADO) to avoid this error.
STATUS
======
This behavior is by design.
MORE INFORMATION
================
The error message is generated because DAO tries to find an .mdb file in the
local directory that matches the schema name you specified for the Oracle object
in your SQL.
Sample Code
-----------
sql = "SELECT * FROM scott.emp"
Set wks = Workspaces(0)
Set con = wks.OpenDatabase("dseOracle", False, False, _
& "ODBC;UID=scott;PWD=tiger;")
Set rss = con.OpenRecordset(sql, dbOpenSnapshot)
This code generates the error because DAO tries to find the scott.mdb file.
REFERENCES
==========
For information on how to acquire ADO and the new Microsoft Oracle ODBC driver,
please see the following article in the Microsoft Knowledge Base:
Q175018 HOWTO: Acquire and Install the Microsoft Oracle ODBC Driver
For information on how to use ADO with Oracle, please see the following article
in the Microsoft Knowledge Base:
Q176936 INFO: Visual Basic 5.0 Accessing an Oracle Database Using ADO
For more information on using DAO with Visual Basic, please see:
"Hitchhiker's Guide to Visual Basic & SQL Server," William Vaughn, 784
pages, Microsoft Press, 1997
(c) Microsoft Corporation 1999, All Rights Reserved.
Contributions by Sam Carpenter, Microsoft Corporation
Additional query words:
======================================================================
Keywords : kberrmsg kbDAOsearch kbDAO350 kbOracle kbVBp500 kbGrpDSVBDB
Technology : kbVBSearch kbAudDeveloper
Version : WINDOWS:5.0
Issue type : kbprb
=============================================================================